blob: d66fb62c34ef01805e647d3c4984c208f55d356d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
;------------------------------------------------------------------------------
; @file
; Emits Page Tables for 1:1 mapping.
; If using 1G page table, map addresses 0 - 0x8000000000 (512GB),
; else, map addresses 0 - 0x100000000 (4GB)
;
; Copyright (c) 2021 - 2023, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
;------------------------------------------------------------------------------
BITS 64
%define ALIGN_TOP_TO_4K_FOR_PAGING
;
; Page table non-leaf entry attribute
;
%define PAGE_NLE_ATTR (PAGE_ACCESSED + \
PAGE_READ_WRITE + \
PAGE_PRESENT)
;
; Page table big leaf entry attribute:
; PDPTE 1GB entry or PDE 2MB entry
;
%define PAGE_BLE_ATTR (PAGE_ACCESSED + \
PAGE_READ_WRITE + \
PAGE_DIRTY + \
PAGE_PRESENT + \
PAGE_SIZE)
;
; Page table non-leaf entry
;
%define PAGE_NLE(address) (ADDR_OF(address) + \
PAGE_NLE_ATTR)
%define PAGE_PDPTE_1GB(x) ((x << 30) + PAGE_BLE_ATTR)
%define PAGE_PDE_2MB(x) ((x << 21) + PAGE_BLE_ATTR)
ALIGN 16
%ifdef PAGE_TABLE_1G
Pdp:
;
; Page-directory pointer table (512 * 1GB entries => 512GB)
;
%assign i 0
%rep 512
DQ PAGE_PDPTE_1GB(i)
%assign i i+1
%endrep
%else
Pd:
;
; Page-Directory (2048 * 2MB entries => 4GB)
; Four pages below, each is pointed by one entry in Pdp.
;
%assign i 0
%rep 0x800
DQ PAGE_PDE_2MB(i)
%assign i i+1
%endrep
Pdp:
;
; Page-directory pointer table (4 * 1GB entries => 4GB)
;
DQ PAGE_NLE(Pd)
DQ PAGE_NLE(Pd + 0x1000)
DQ PAGE_NLE(Pd + 0x2000)
DQ PAGE_NLE(Pd + 0x3000)
TIMES 0x1000 - ($ - Pdp) DB 0
%endif
Pml4:
;
; PML4 (1 * 512GB entry)
;
DQ PAGE_NLE(Pdp)
TIMES 0x1000 - ($ - Pml4) DB 0
EndOfPageTables:
|
